All
these illusions were adapted/designed by the authors
with the aim of allowing the visitor/reader to:• discover how we
perceive things,• test and enhance
the power of observation and critical thinking skills,• improve mental flexibility,• have fun being deceived
by puzzling visual challenges.

You can use the SVI
feature below in your non-commercial webpage
for free as long as you leave the copyright and
author's info intact and link to
us.

Have
a look at this intriguing Venetian mask...
Do you notice something particular?
What kind of emotion do its features express?